Hello, while it is unfortunate that they may have been mistaken, that alone is not enough to overturn this PK. If your actions/what happened to them gave them a sense of idea to cause them to believe you were working as an undercover officer or confidential informant against their faction, they are within their rights to PK your character if they choose to do so. They do not need to reach out and attempt to speak with you and clear things up. Ultimately, that is how the mafia operates in these situations, with decisions often being made based on suspicion rather than certainty.